Lock.



I. 1:". KCH.A

LOCK.

APPLIGATIO'N FILED Arima, 1914.

1 .l 1 2,706. Patented oen. 6, 1914.

1HE NoRRls PETERS CO.. PHo1n-LITHO., WASHINGTON, D4 d;

Ten sTaTns TaTnnT opinion.

JOHN F. KOCH, UF VESGOS'VILLE, PENNSYLVANIA, ASSIGNR OF THREE-FOURTHS T0 CYBUS Y. SCIIELLY, OF ATLLENTGIJVN, ENNSYLVANIA.

LOCK.

nuevos.

Specicaton of Letters Eatent.

Patented Got. 6, 1914.

Application filed April 16, 1914. Serial No. 832,249.

To all whom it may concern Be it known that I, JOHN F. KOCH, a citi zen of the United States, residing at l/Vescosville, in the county of Lehigh and State of Pennsylvania, have invented certain new and useful Improvements in Locks, of which the following is a speciiication.

My invention relates to improvements in locks, and more particularly to an improved lock designed for use in connection with trunks, chests, suit cases, and other similar devices in which a plurality of locks are compelled to operate in unison and controlled by a single key located in one of the locks.

It is customary in trunks, suit cases and like devices to provide at a central point, a main lock, and at other points adjacent the ends of the suit case, provide other locking means, all ot said locking means being operated independently.

t is the purpose of my invention to provide a plurality of such locking devices of an improved construction in which the tumblers of all of the locks are compelled to operate simultaneously, so that they may be simultaneously moved to unlocking position when the proper key is inserted in one of the locks and given a partial rotary movement.

With these and other objects in view, the invention consists in certain novel features of construction and combinations and arrangements of parts as will be more fully hereinafter described and pointed out in the claims.

In the accompanying drawings: Figure 1 is a view in elevation illustrating my improvements. Fig. 2 is a view in longitudinal section with the lock casings removed. Fig. 3 is a fragmentary view in longitudinal section on the line 3 3 of Fig. 1, and Fig. 11 is a view of the key.

While my invention is adapted for use on any two part device in which it is desired to lock the parts together, we will assume for purposes ot illustration that the lock is used in connection with a trunk, in which 1 is the body of the trunk and 2 the cover.

To the cover 2, I secure three lock casings 3, 4, and 5 respectively with their lower edges adjacent the lower edge 0I" the cover, and preferably having their side edges regis tering with the side edges of plates 6 which are secured to the body 1. In other words,

the lock casings and the plates are designed to carry out a neat and attractive conliguration, so that when the parts are together, they will have the appearance ot' complete single devices rather than two separate parts.

The base plate 7 of the center' lock snpports two tumblers 8, the latter guided in their movement toward and away from each other by transverse bars 9 and 10 respectively. The bar 9 is in posit-ion to be engaged by the outer ends of the tumblers, while the bar 10 is located in registering recesses 11 in the inner faces of the tumblers,

so that the bars 9 and 10 together constitute parallel guides to hold th-e tumblers against pivotal movement, yet allow them to move toward and away from each other.

The lower ends of the tumblers are of general hook shape as indicated at 12, so that they engage opposite sides of a keeper 13, the latter' being preferably of the shape of an arrow head, so that when the parts are moved together, it will press the tumblers apart and permit the latter to be moved into locking position by means of springs 14. 'Ihese springs 14 are connected at one end to the base plate 7, and at their free ends bear lagainst the outer faces of the tumblers so that the latter are normally ield in locking position.

The tumblers 8 are provided in their upper portions in their adjacent faces with key receiving recesses 15 to receive a key 16 projected through a keyhole 17 in the casing 4. The key 16 has wings at opposite sides, so that when turned in either direction, will force the tumblers apart.

In the casings 3 and 5, single tumblers 18 i are provided and are guided in their move ment by bars 19 and 20. The bars 19 are engaged by the upper ends of the tumblers 1S, and the bars 20 project through slots 21 in the tumblers 18, so that the bars 19 and 2O hold the tumblers against pivotal movement, but permit them to move laterally.

rIhe springs 22 normally hold the tumblers 18 in locking position, so that their hooked lower ends 23 engage keepers 24C on the plates 6. To compel the tumblers 8 and 18 to move simultaneously, I provide rods 25 which are positioned in recesses 26 in the tumblers and operate to connect the tumblers. In other words, the rod 25 at one side connects one tumbler S with the right hand tumbler 18, and the rod Q5 at the other side connects the lett hand tumbler with the lett hand tumbler 18.

rllhe rods are inclosed by longitudinal casings 2'?, and While my invention is not limited to any particular' manner of securing any or the parts to the trunk, l have illustrated securing devices 28 for the purpose ivnich We may assume to be either pins, screws, rivets, or other devices rwhich Would securely hold the parts to the trunk and rend fraudulent manipulation oi" the lochs as diiiicult as possible.

.ln operation, -when the cover 2 is moved down upon the body i, the keepers 13 and 2.a 1vill force the tumblers to one side, and then the latter will spring into locked engagement, so that the cover is securely locked at diiierent points throughout its length.

To release the cover it is simply necessary to insert the hey 1G in the keyhole l?, and give the key a turn in eit ier direction. rlhis will force the tnmblers 8 apart and also move the tnmblers i8 so that all ot the tumblers Nwill be out ot locked position. lllhen the key is removed or released, the springs will return the tumblers to their i'o "mer locked position.

'l/Thile have not attempted to illustrate any particular type ot' hey, it is of course to be understood that i may make lhe tnmblers ot such a shape to require particular keys so that one hey will unlock only 'the tumblers with which it is especially adapted, giving the owner of each trank a particular hey for his particular lock.

Various slight changes might be made in the general i'orm and arrangement oi parts described without departing` from my invention, and hence l do not limit myself to the precise details set Ytorth, but consider myself at libeitv to maire such changes and alterations as airly iiall Within the spirit and scope of the appended claims.

Having thus described my invention, what l". claim as new and desire to secure by ftters latent is:

Tie combination With three lock casn aaaped to be secured to one part, and three keepers adapted to be secured to a second part and to be projected in the lock casings when the two parts are together, oi

transverse parallel guide bars in all of the lock casings, tivo tumblers in the interinsdiate lock casing, said tumblers having their upper ends movable against one of the bars and having recesses in their inner faces receiving the other of said bars, said tumblers in the end casings having their upper ends engaging one of the guide bars and having slots intermediate their ends receiving the other oi said guide bars, all ot said tum blers having hook shaped loiver ends, springs in the casings normally holding the tumblers With their hook shaped ends in locked engagement with the keepers, and means compelling all ot said tumblers to move together, substantially as described.

2. rihe combination with three loch casings adapted to be secured to one part, and three keepers adapted to be secured to a second part and to be projected in the lock asings when the tivo parts are together, of transverse parallel guide bars in all of the lock casings, two tnmblers in the intermediate loch casing, said tumblers havingtheir upper ends movable against one of the bars and having recesses in their inner faces receiving the other of said bars, said tumblers in the end casings having` their upper ends engaging one of the guide bars and having slots intermediate their ends receiving the other oi? said guide bars, all oit' said tumblers having` hook shaped loiver ends, springs in the casings normally holding the tumblers with their hook shaped ends in locked engagemcnt with the keepers, rods positioned between the tumblers in the end casings and the tnmblers in the intermediate casing whereby the moven ent ot the last-mentioned tumblers compels the movement of the tumblers in the end casings, longitudinal casings covering the rods between the loclr casings, and said tumblers in the intermediate casing having' key receiving` recesses in their adjacent faces, substantially as described.

in testimony whereof l have signed my name to this specilication in the presence of tivo subscribing Witnesses.

JOHN F. KOCH. Witnesses V. Z. Koi-inne, ll'. G. Koen.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, l). C. 

